C5.2.1 - Rate Of Reaction Flashcards
What is rate of reaction?
A measure of how quickly reactants are used of products are formed
What is the equation for rate of reaction?
Amount of reactant used / time taken
Amount of product formed / time taken
What are the two methods of measuring gas?
Upside down measuring cylinder in water
Gas syringe
Why is the gas syringe good for measuring gas?
It is made from glass
It is marked in cm cubed
Why do we use the gas syringe to calculate rate of reaction?
To measure how much gas is being formed or how much gas is being used
What equation is used to calculate the mean rate of reaction?
Change in volume / change in time
On a graph, how do you calculate the instantaneous rate of reaction?
You have to draw a tangent at the point where you want to calculate the rate - the gradient is the instantaneous rate of reaction
